prince william was here today, spent the day with the duchess. when he left, we did get an update. this is what the palace told me. the duchess is continuing to feel better. she and the duke are grateful for the good wishes they've received. she will continue to remain in the hospital and be treated for acute morning sickness. she's improving as she rests and gets the nutrients she needs. >> i know, max, there's been question about succession, especially if there are twins. we have no idea if she's carrying twins, but has all this been worked out and if it has, walk us through what happened. >> reporter: the pressure is on. there is a general agreement in the government, and the queen agrees with this, everyone has agreed, but if kate has a girl, that girl should automatically become the next in line to the throne after prince william. but at the moment, she has a younger brother, and that younger brother will leapfrog her. just to give you a sense of how complicated this is, wolf, these laws go back hundreds of years. you have to identify which laws, going back a hundred years, or